Same fix as with the houghcircles

Moved second `imshow()` inside the if-statement to prevent error when no lines have been found and the function is called with an empty `cdst`.
2016-06-12 12:55:29 +02:00 · 2016-06-12 12:55:29 +02:00 · 445349dd7d
commit 445349dd7d
parent c5bbc0353c
1 changed files with 2 additions and 1 deletions
--- a/samples/python/houghlines.py
+++ b/samples/python/houghlines.py
@ -47,7 +47,8 @@ if __name__ == '__main__':
                pt1 = ( int(x0+1000*(-b)), int(y0+1000*(a)) )
                pt2 = ( int(x0-1000*(-b)), int(y0-1000*(a)) )
                cv2.line(cdst, pt1, pt2, (0, 0, 255), 3, cv2.LINE_AA)
+                
+            cv2.imshow("detected lines", cdst)

    cv2.imshow("source", src)
-    cv2.imshow("detected lines", cdst)
    cv2.waitKey(0)